Device for the filling of dispersers of the aerosol type having a separate self-contained propulsion unit

ABSTRACT

A device for the filling of a pushbutton dispenser of the aerosol type with a propelling medium and a product to be dispensed, wherein the propelling medium and the product are contained in separate receptacles, one within the other, the valve of the dispenser comprising a pushbutton removably mounted on a hollow sliding rod. The filling device comprises an adjustably mounted head traversed by an axial channel connected via transverse fittings with a line connected at one side thereof to a source of the propelling medium under pressure leading to be introduced therethrough into an axial disposed injection nozzle at the lower end of said filling head. A second oblique channel via a transverse fitting of the device operatively connects at another side to a source of the product to be distributed, with the lower end of the oblique channel also communicating with the injection nozzle. Hermetic seal members are lodged in the head for the purpose of working in conjunction with the rod of the pushbutton and defining in the injection nozzle two independent circuits intended, respectively, for the inflow of the propelling medium and of the product to be distributed.

United States Patent Marand 51 Feb. 15, 1972 3,455,489 7/l969 Meshberg..l4l/l04 X Primary Examiner-Charles J Myhre Att0rney-Wenderoth, Lind &Ponack [5 7] ABSTRACT A device for the filling of a pushbutton dispenserof the aerosol type with a propelling medium and a product to bedispensed, wherein the propelling medium and the product are containedin separate receptacles, one within the other, the valve of thedispenser comprising a pushbutton removably mounted on a hollow slidingrod. The filling device comprises an adjustably mounted head traversedby an axial channel connected via transverse fittings with a lineconnected at one side thereof to a source of the propelling medium underpressure leading to be introduced therethrough into an axial disposedinjection nozzle at the lower end of said filling head. A second obliquechannel via a transverse fitting of the device operatively connects atanother side to a source of the product to be distributed, with thelower end of the oblique channel also communicating with the injectionnozzle. Hermetic seal members are lodged in the head for the purpose ofworking in conjunction with the rod of the pushbutton and defining inthe injection nozzle two independent circuits intended, respectively,for the inflow of the propelling medium and of the product to bedistributed.

7 Claims, 3 Drawing Figures PATENTEDFEB 15 I972 sum 1 of 2 3 r u FINVENT OR JEAN MARAND ATTORNEYS PATENTEOFEB 15 I972 SHEET 2 OF 2 s. C 1m INVENTOR JEAN MARAND FIG.2

BY 5 ATTORNEYS DEVICE F OR THE FILLING OF DISPERSERS OF THE AEROSOL TYPEHAVING A SEPARATE SELF- CONTAINED PROPULSION UNIT This is a continuationof application Ser. No. 764,1 l0, filed Oct. 1, 1968.

The invention relates to a filling or charging device which makes itpossible to fill simultaneously or successively a pushbutton dispenserof the aerosol type with a propelling agent and a product to bedistributed as by spraying, wherein the said propelling agent and thesaid product are contained in separate receptacles, being lodged onewithin the other.

The dispensers with which the filling device of this invention isintended to be used are not necessarily intended for the spraying of anactive product which they contain, but can also be utilized for thepurpose of dispensing the latter in the form of a foam, jet, paste, orany other form, it being understood that the two phases, namely, theproduct to be dispensed and the propelling agent, are contained inseparate receptacles.

More specifically, the invention relates to dispensers of the precedingtype wherein the distributor valve comprises a pushbutton mounted in ademountable manner on a hollow sliding rod, the said rod controlling twoplugs situated, respectively, in the circuit of the propelling mediumand in the circuit of the product to be distributed, a third circuitrunning through the valve or otherwise, and including means forsubjecting the product in the container to be dispensed, to atmosphericpressure. In such dispensers, the pushbutton operated rod, as mountedwith a sliding fit in the body of the valve, is traversed by twoconduits or channels, each one belonging to one of the twofirst-aforementioned circuits. The outer apertures of the said conduitsare cleared when the head of the pushbutton is withdrawn, whereas whenthe pushbutton is depressed the inner apertures of said conduits issue,respectively, into the propelling medium receptacle and into thereceptacle containing the product.

Specifically, the filling or charging device ofthis invention isparticularly adaptable for, but not limited to, use with dispensers ofthe type referred to in applicant's copending application Ser. No.686,009 filed Nov. 28, 1967, now US. Pat. No. 3,451,596.

In the conventional prior art aerosol dispenser the product to bedispensed is usually in liquid form and is contained under pressure inthe same receptacle as the propelling medium which is generally in thegaseous form. The product to be dispensed is introduced either beforesealing the receptacle or after its sealing, it being noted that one ofthe principal features of a valve for the dispensers of this type isthat of being capable of having a liquid flow through in a directionopposite to that which is provided for its utilization.

So far as the propelling medium of the prior art devices is concerned,it can be introduced either at the instant of sealing, before securingthe hood bearing the valve on the body of the receptacle, or via avalve, wherein the receptacle is sealed in advance.

In the case of dispensers of the prior art type, a well-known techniqueis that of creating filling or charging devices comprising'a head whichis activated in a vertical reciprocable movement and intended to cap thebody of the dispensing valve during the filling process. The said headis traversed by an intake channel for the propelling fluid, thecirculation of which is controlled by an inner valve.

Accordingly, aprimary object of the inventive device is to provide animproved filling or charging device of the general aerosol typeembodying the pushbutton-type dispenser valve wherein the propellingmedium and the product to be sprayingly distributed are contained inseparate receptacles.

Pursuant to the present invention, in which the device for the fillingwith propelling medium and the. product. to be dispensed via saidpushbutton-type dispenser having the propulsion medium and the productcontained in separate receptacles, the said instant fillingdevice'comprises a head having generally vertical adjustable motion,traversed by a first duct which is connected at one upstream side by aconduit connected to a source of propellingmedium under pressure, saidfirst duct communicating via a central vertical duct in said fillinghead with an injection nozzle; and further characterized in that thesaid head comprises-a second duct connected also at an upstream sidethereof bya conduit connected to a source of the product to bedispensed. and connected via an oblique channel in said head with thesame injection nozzle, said filling head having sealing members disposedin the head and cooperating with the rod of the pushbutton of thedispenser for the purpose of filling and helping to define in theinjection nozzle two independent circuits intended, respectively, forthe flow of the propelling medium and of the product to be dispensed. Asingle device is thus able to ensure the simultaneous filling of the tworeceptacles of the dispenser.

According to a preferred embodiment, the injection nozzle thereofcomprises a chamber into which issue the two intake ducts, respectively,for the propelling medium and the agent to be dispensed, the aperturesof the-said two ducts being separated by an annular joint to betraversed in a sealed or packed manner by the uncapped rod of thepushbutton, when the dispenser is in a charge filling condition.

Other features of the invention will become apparent from the followingdetailed specification taken in conjunction with illustrative drawings,in which:

FIG. I is a simplified-schematic of a filling device pursuant to theinvention, where the dispensers to be filled are shown by means of adot-dash line;

FIG. 2 is an axial'sectional view on an enlarged scale of the injectionhead and of theupper part of a dispenser vessel to be filled, the saidmembers being shown at rest; and

FIG. 3 is a view similar to FIG. 2 showing the foregoing in assemblyduring the filling process.

With reference to schematic FIG. I of the attached drawings, it will benoted that the filling device comprises generally a table 1 supportingthe aerosol-type dispenser A, the propulsion and distribution phases ofwhich are contained in separate receptacles. The filling devicecomprises a head 2 supported by the rod 3 of-a jack 4, which is in turnconnected to a sleeve 5 sliding along a fixed standard 6. The positionof the jack 4 is secured b'ya locking device 7.

The filling head 2 is connected bymeans of a flexible duct 8 to a dosageconnecting fitting or jack 9, which is supplied with a propelling mediumunder pressure via a duct 11. Valves l2 and 13 control the circulationofthe propelling medium. The dosage connecting fitting 9 comprises asliding piston 14 actuated by a jack 15 with an adjustable bottom whichis regulated by means of compressed air.

Also terminating in the filling head 2 is a second flexible duct 16issuing from a similar dosage connecting fitting or jack 17 suppliedwith the product to be dispensed via a duct 18. The piston 19 of thedosage jack 17 is in turn regulated by an adjustable bottom jack 21which is alsoactuated by compressed air, similar to jack 15.

The filling head 2 comprises (FIG. 2) two internally threaded ducts 22and 23, which serve, respectively, the purpose ofsecuring the ducts 8and 16.

The duct 22 interconnects with an axial chamber 24 within which ismounted a sliding core 25 of magnetic stock which constitutes a plungingcore subjectable to the field of an electromagnet 26 superposed on saidfilling head2. Said core 25 includes a central recessed finger 27 whichprojects slightly axially therefrom in relation to it, said core 25further having an annular radial projecting lip which is acted upon by aspring 28 interposed between it and the mounting flange 28a, therebyimpelling said core towarda seat-.29-having an axial bore 29a which iscoextensive with an axial duct or channel 31 of head 2, wherein saidcore serves the purpose of allowing passage of the propelling medium. Atrest, the finger 27. cooperatively and normally engages the. seat 29 soas to prevent the propelling medium introduced under pressure via duct8, from entering the channel 31.

Further, in accordance with the invention, the filling head 2terminates-at its lower end'in an injection nozzle 30 consisting of asmall feed collar which defines an injection chamber 33 into whichchannel 31 issues.

Also connecting with said chamber 33 is an obliquely disposed channel 34which communicates with the threaded duct 23. The apertures of channel31 and channel 34 are separated by a toroidal deformable gasket 35, thefunction of which will be explained hereinafter.

The filling device as designed and described is particularly capable offilling aerosol dispensers of the type shown in FIG. 2.

It will suffice to call attention here to the fact that such a dispensercomprises an outer receptacle 41 closed by a valve hood 42 having anaperture with a flared-out edge 43, and within the body of the valve aninside chamber 44 containing a first annular gasket or seal 45 which istight or seated at low pressure and which controls the flow of theproduct to be dispensed. The seal 45 is pressed around its periphery byan annular body 46 within which the rod 47 of the pushbutton is mountedwith a sliding fit. The rod 47, which contains a duct 48 for the flow ofthe propelling medium in a gaseous state, is acted upon by a spring 49impelling it toward the closed position, and it traverses a sealinggasket 51 under high pressure. The latter is maintained in its seat bythe collar 52 of the receptacle 53 containing the propelling mediumwhich is generally liquefied. The receptacle 53 is secured on an annularrim 54 of the body 46 by means of its own rim 55 provided about theneck. From chamber 44 issues a plunger tube 56 which penetrates into thereceptacle 4]. In its normal position, the free and reduced part 47a ofthe rod 47 is capped by a pushbutton 57 which contains a spray nozzle 58connected by means of two suitable channels to channel 48 and to anaxial channels 61 situated outside of the rod 47 and serving the purposeof conducting the product to be dispensed. The rod 47 is provided withan annular projection 63, which, when at rest, abuts against the gasket45 under the action of the spring 49. The descent of the rod 47 ishalted by means of stops 64 of the chamber 44.

According to another feature of the invention, the diameter andthickness of the injection nozzle are so proportioned as to enable it tobe freely introduced into the annular space between the rod 47 andcylindrical aperture 43a, which terminates the truncated cone part 43,assuming that the pushbutton 57 has been previously withdrawn, or thatit is not mounted. Moreover, the inside diameter of gasket is soproportioned complementally to sealingly receive the correspondingreduced part 47a of rod 47 to effect a sealed connection therewith.

Lastly, the height of the feed collar 32 of the projection nozzle andthe slope of the truncated cone part 62 provided at the lower end of thehead 2, are so proportioned as to permit reciprocal abutment of theannular projection 63 against the stops 64, while leaving a spacebetween the truncated cone parts 43 and 62 while the feed collar 32, inthat position, assures the flexure of the resilient gasket and a tightcontact with the latter.

The filling device thus designed operates in the following manner (FIG.3):

The: dispenser A, which is finished but not provided with a pushbutton57, is mounted in perpendicular alignment with the vertical axis XX ofthe head 2. The latter is then depressed by the action of the jack 4until the cone portion 62 is arrested by the stops 64, the feed collar32 then flexingly sealing the gasket 45 as stated above. At the sametime, the rod 47 has penetrated into the injection chamber 33 with thetapered part 470 of the-said rod penetrating into the cleared gap of thegasket 35. The said penetration is brought about when the rod 47 hasreached the end of its stroke in the descent, wherein aperture 480communicably interconnects channel 48 and the receptacle 53, and saidrod 47 projects beyond the gasket 51 and inside of the said receptacle.

At that moment the electromagnet 26 is excited and attracts the core 25.The obturating finger 27 uncovers the seat 29 and the propelling mediumis thus introduced into channel 31 from where it flows into channel 48of rod 47, and lastly into the receptacle 53 (arrows P). The circulationof the propelling medium is ensured by the piston 14 of the dosage jack9 (FIG. 1

The product to be dispensed is thrust by the piston 19 of the dosagejack 17 (FIG. 1) into channel 34 from where 1 it penetrates into chamber33 of the injection nozzle, preferably simultaneously, although thecoincidence of the operations is not requisite. The collar 32 havingdepressed the gasket seal 45, the product to be distributed fillschamber 44 and flows therefrom into the plunger tube 56 from which pointit enters inside the receptacle 41 (arrows D). The air contained in thereceptacle 41 escapes, as indicated by the arrows M. lt-is replaced bythe product to be dispensed.

Thus, the invention makes it possible to fill very rapidly andautomatically the aerosol dispensers wherein the propelling medium andthe product to be distributed are separated from each other. Theelectrovalve made up of the plug 27 and the seat 29 makes it feasibleand possible to limit the losses of propulsion medium. On the otherhand, since the product to be distributed generally has a low vaporpressure, it isnt necessary to provide another valve other than acalibrated valve at the outlet of the dosage piston 17 along the circuitof the said product.

The invention affords substantial advantages, primarily enabling emptydispensers, completely finished and ready for use so far as theirmechanical members are concerned, to be filled by a single charginghead. All that need be done, therefore, is to provide a single chargingstation which can be integrated into an automatic fabricating chain orproductionrun.

Moreover, the manufacturer of such is able to deliver same completelyfinished to a processor who adds the product to be dispensed and whoseonly investment is the purchase of a filling head. One is thus able toseparate distinctly the functions of the said two special features.

Obviously, the invention is not limited to the means described herein,and variants of embodiments can be produced, both with respect to thedistributor head and to the control, as well as to the other parts ofthe aerosol dispenser proper.

Thus, by reason of a suitable arrangement of the valves in the P-circuitvia conduit 8 of the propelling medium, one is also able, through acorresponding channel, to bring about a vacuum in the tank 53 beforefilling it with the propelling medium.

Similarly, if a supplementary circuit is provided in the filling device,with suitable valves, one is able to inject a scrubbing liquid, such asa disinfectant, into circuit D via conduit 10 and to reaspirate it,whereupon the product to be dispensed is charged therein.

What is claimed is:

1. A filling and charging device for filling empty pushbutton,valve-operated dispensers of the aerosol type wherein the propellingmedium and product to be dispensed are contained in separatereceptacles, and wherein the dispenser valve comprises a removablymounted pushbutton on the upper end of a hollow, vertically depressiblesliding rod having flow paths therealong for the propelling medium andfor the product, one of which is the hollow interior of said rod, andattendant valve seal means, said rod normally biased in a raised valveclosed condition, said filling and charging device comprising incombination:

a. a filling head body adapted for vertically adjustable mounting onsupport means, including a depending injection nozzle at the lower outerend thereof and having a recessed inner end;

b. said body including first and second channelways independentlyconnectable with said injection nozzle interiorly of said body, saidfirst channelway connectable exteriorly with an exterior source ofpropelling medium introducible therethrough under pressure, and saidsecond channelway connectable exteriorly with an exterior reservoir ofdispensable product material therethrough; and

. hermetic seal valve means in said body including means to selectivelyeffect opening and closing of said first channelway, and furtherincluding second seal means therein for cooperative engagement with saidrod means of the dispensers pushbutton-operated valve means between saidflow paths to cooperatively effect temporary separation of the first andsecond channelways when said filling head is in temporary assembly withsaid dispenser container to be filled and charged.

2. A filling and charging device as defined in claim 1 wherein the valvemeans of paragraph (c) includes electromagnetic valve means including:

a. an annular electric magnet with selectively operable switch meansconnected to a source of electrical energy; and

b. a resiliently biased center core means constituting a verticallydisposed reciprocable shiftable valve member and including means fornormally biasing said valve member in its hermetically closed condition.

3. A filling and charging device as defined in claim 1 wherein the valvemeans of paragraph (c) in said body includes:

a. a deformable valve seat operatively disposed in said first channelwayand having a valve port therein;

b. electromagnetic valve means including:

1. an annular electromagnet with selectively operable switch meansconnected to a source of electrical ener- 2. a resiliently biased centercore means constituting a vertically disposed reciprocably shiftablevalve member and including means for normally biasing said valve memberagainst the valve seat member to hermetically close said valve porttherein in its hermetically closed condition.

4. A filling and charging device as defined in claim 1 whe in theinjection nozzle comprises an annular, axially projecting collar adaptedto be inserted into the injection chamber encircling the dispenser rodand interposed between it and the surrounding means supporting the valvemeans of the aerosol-type container to be filled.

5. A filling and charging device as defined in claim 1 wherein theinjection nozzle includes a chamber into which the two inflowchannelways issue via a separate central and peripheral aperture,respectively, and annular hermetic seal means recessed adjacent theinner end of said noule and acting to separate within the nozzle saidapertures of the two channelways and thereby complete therein thedefining of the two independent filling circuits for the respectiveinflow ofthe propulsion medium and of the product to be dispensed, whensaid annular seal is engaged by the uncapped depressible rod of thepushbutton-operated valve of the dispenser being filled and charged.

6. A filling and charging device for filling empty pushbutton,valve-operated dispensers of the aerosol type wherein the propellingmedium and product to be dispensed are contained in separatereceptacles, and wherein the dispenser valve comprises a removablymounted pushbutton on the upper end of a hollow, vertically depressiblesliding rod having flow paths therealong for the propelling medium andfor the product, one

introducible of which is the hollow interior of said rod, and attendantvalve seal means, said rod normally biassed in a raised valve-closedcondition, said filling and charging device comprising in combination:

a. a filling head body adapted for vertical reciprocable mounting onsupport means, and having a relatively small diameter vertical, axialbore communicating at inner and outer opposite ends with enlargedcounterbore means, said body having a lowermost truncated cone shapewith an axially projecting injection nozzle defined in part by theaforesaid counterbore at theputer end; b. a valve seat member having alike central bore coextensive with the axial bore in said body and saidseat member being disposed in a counterbore adjacent the inner end ofsaid body axial bore, said valve seat member having an upper endtogether with said bore constituting a scalable valve port;

0. valve means superposed on said body device including a verticallydisposed valve member reciprocably shiftable for selective engagementagainst said valve seat to alternately close and open said valve port;

d. said filling head body having a first inlet passage whose outer endcommunicates with an exterior source of propelling medium to beintroduced therethrough into a receptacle within an associatedaerosol-type dispenser, and whose inner end communicates via said upperend counterbore and enlarged counterbore, via said valve means and axialbore means with said lower end counterbore and centrally with saidinjection nozzle of paragraph (a); and said body having a second inletpassage communicating with an exterior source of dispensing productmaterial to be introduced therethrough into a separate compartmentwithin said aerosol-type dispenser, said second passageway communicatingvia an oblique passageway interconnecting interiorly with the outerperiphery of said injection nozzle of paragraph (a);

e. said injection nozzle counterbore portion adjoining a taperedreducing bore section interconnecting it with said axial vertical boreof the body, and annular seal means recessed adjacently intermediatesaid vertical bore and tapered reducing bore sections;

f. said nozzle, reducing bore with seal means, and axial bore beingproportioned to complementally mate with the upper portion of thedepressible sliding rod and attendant valve seal means of an associatedaerosol dispenser container between said flow paths to providesubstantially concurrent filling and charging of said container with theproduct material and propelling medium respectively; and

g. means to effect predetermined actuation of said valve means to permitthe desired inflow of said respective product and propelling medium.

7. A filling and charging device as defined in claim 6 wherein:

a. the valve seat of paragraph (b) is of deformable material;

and

b. the valve means of paragraph (c) includes electromagnetic valve meanshaving a pluging core valve member selectively engaging against thedeformable valve seat to hermetically seal same, and means normallybiasing said core valve member in its closed condition.

1. A filling and charging device for filling empty pushbutton,valve-operated dispensers of the aerosol type wherein the propellingmedium and product to be dispensed are contained in separatereceptacles, and wherein the dispenser valve comprises a removablymounted pushbutton on the upper end of a hollow, vertically depressiblesliding rod having flow paths therealong for the propelling medium andfor the product, one of which is the hollow interior of said rod, andattendant valve seal means, said rod normally biased in a raised valveclosed condition, said filling and charging device comprising incombination: a. a filling head body adapted for vertically adjustablemounting on support means, including a depending injection nozzle at thelower outer end thereof and having a recessed inner end; b. said bodyincluding first and second channelways independently connectable withsaid injection nozzle interiorly of said body, said first channelwayconnectable exteriorly with an exterior source of propelling mediumintroducible therethrough under pressure, and said second channelwayconnectable exteriorly with an exterior reservoir of dispensable productmaterial introducible therethrough; and c. hermetic seal valve means insaid body including means to selectively effect opening and closing ofsaid first channelway, and further including second seal means thereinfor cooperative engagement with said rod means of the dispenser''spushbutton-operated valve means between said flow paths to cooperativelyeffect temporary separation of the first and second channelways whensaid filling head is in temporary assembly with said dispenser containerto be filled and charged.
 2. A filling and charging device as defined inclaim 1 wherein the valve means of paragraph (c) includeselectromagnetic valve means including: a. an annular electric magnetwith selectively operable switch means connected to a source ofelectrical energy; and b. a resiliently biased center core meansconstituting a vertically disposed reciprocable shiftable valve memberand including means for normally biasing said valve member in itshermetically closed condition.
 2. a resiliently biased center core meansconstituting a vertically disposed reciprocably shiftable valve memberand including means for normally biasing said valve member against thevalve seat member to hermetically close said valve port therein in itshermetically closed condition.
 3. A filling and charging device asdefined in claim 1 wherein the valve means of paragraph (c) in said bodyincludes: a. a deformable valve seat operatively disposed in said firstchannelway and having a valve port therein; b. electromagnetic valvemeans including:
 4. A filling and charging device as defined in claim 1wherein the injection noZzle comprises an annular, axially projectingcollar adapted to be inserted into the injection chamber encircling thedispenser rod and interposed between it and the surrounding meanssupporting the valve means of the aerosol-type container to be filled.5. A filling and charging device as defined in claim 1 wherein theinjection nozzle includes a chamber into which the two inflowchannelways issue via a separate central and peripheral aperture,respectively, and annular hermetic seal means recessed adjacent theinner end of said nozzle and acting to separate within the nozzle saidapertures of the two channelways and thereby complete therein thedefining of the two independent filling circuits for the respectiveinflow of the propulsion medium and of the product to be dispensed, whensaid annular seal is engaged by the uncapped depressible rod of thepushbutton-operated valve of the dispenser being filled and charged. 6.A filling and charging device for filling empty pushbutton,valve-operated dispensers of the aerosol type wherein the propellingmedium and product to be dispensed are contained in separatereceptacles, and wherein the dispenser valve comprises a removablymounted pushbutton on the upper end of a hollow, vertically depressiblesliding rod having flow paths therealong for the propelling medium andfor the product, one of which is the hollow interior of said rod, andattendant valve seal means, said rod normally biassed in a raisedvalve-closed condition, said filling and charging device comprising incombination: a. a filling head body adapted for vertical reciprocablemounting on support means, and having a relatively small diametervertical, axial bore communicating at inner and outer opposite ends withenlarged counterbore means, said body having a lowermost truncated coneshape with an axially projecting injection nozzle defined in part by theaforesaid counterbore at the outer end; b. a valve seat member having alike central bore coextensive with the axial bore in said body and saidseat member being disposed in a counterbore adjacent the inner end ofsaid body axial bore, said valve seat member having an upper endtogether with said bore constituting a sealable valve port; c. valvemeans superposed on said body device including a vertically disposedvalve member reciprocably shiftable for selective engagement againstsaid valve seat to alternately close and open said valve port; d. saidfilling head body having a first inlet passage whose outer endcommunicates with an exterior source of propelling medium to beintroduced therethrough into a receptacle within an associatedaerosol-type dispenser, and whose inner end communicates via said upperend counterbore and enlarged counterbore, via said valve means and axialbore means with said lower end counterbore and centrally with saidinjection nozzle of paragraph (a); and said body having a second inletpassage communicating with an exterior source of dispensing productmaterial to be introduced therethrough into a separate compartmentwithin said aerosol-type dispenser, said second passageway communicatingvia an oblique passageway interconnecting interiorly with the outerperiphery of said injection nozzle of paragraph (a); e. said injectionnozzle counterbore portion adjoining a tapered reducing bore sectioninterconnecting it with said axial vertical bore of the body, andannular seal means recessed adjacently intermediate said vertical boreand tapered reducing bore sections; f. said nozzle, reducing bore withseal means, and axial bore being proportioned to complementally matewith the upper portion of the depressible sliding rod and attendantvalve seal means of an associated aerosol dispenser container betweensaid flow paths to provide substantially concurrent filling and chargingof said container with the product material and propelling mediumrespectively; and g. means to effect predetermined actuation of saidvalve means to permit the desired inflow of said Respective product andpropelling medium.
 7. A filling and charging device as defined in claim6 wherein: a. the valve seat of paragraph (b) is of deformable material;and b. the valve means of paragraph (c) includes electromagnetic valvemeans having a pluging core valve member selectively engaging againstthe deformable valve seat to hermetically seal same, and means normallybiasing said core valve member in its closed condition.